+test_begin "AC_CONFIG_MACRO_DIRS([not-exist]) and ACLOCAL_AMFLAGS = -I not-exist"
+
+cat > configure.ac << 'END'
+AC_INIT([oops], [1.0])
+AC_CONFIG_MACRO_DIRS([not-exist])
+END
+
+cat > Makefile.am << 'END'
+ACLOCAL_AMFLAGS = -I not-exist
+END
+
+$ACLOCAL -Wno-error 2>stderr \
+ && cat stderr >&2 \
+ && test $(grep -c "couldn't open directory 'not-exist'" stderr) -eq 1 \
+ || r='not ok'
+
+test_end
+
+#---------------------------------------------------------------------------
+